I-90 is closed eastbound at milepost 34 near North Bend. The interstate is closed westbound at milepost 106 near Ellensburg, milepost 84 near Cle Elum and Milepost 70 near Easton.

The closures encompass a more than 70-mile stretch of roadway.

"Conditions are such that it is not safe in some areas for crews to do the work necessary to open the roadway," WSDOT officials said. "Several trees, drifting snow and other debris are blocking the road in several locations. Crews will continue to monitor conditions and begin work when it is safe to do so."

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Officials will evaluate the road early Thursday morning for a possible reopening.

The full closure started around 2 a.m. Tuesday and was caused by ice and falling trees. Troopers responded to 67 collisions overnight.